A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Grouting material for steel bar sleeve connection and preparation method and application thereof
The invention provides a grouting material for steel bar sleeve connection, and belongs to the technical field of concrete. The grouting material for steel bar sleeve connection comprises the following components in percentage by weight: 40-55% of a recycled fine aggregate, 5-10% of a cement dehydration phase, 25-45% of cement, 5-10% of a mineral admixture, 0.4-1.2% of a water reducing agent, 5-10% of a middle and later stage expanding agent, 0.02%-0.05% of a plastic expanding agent, 0.01%-0.05% of a defoaming agent and 1%-5% of an early strength agent. The invention further provides a preparation method and application of the grouting material. Waste cement concrete is used for generating the recycled fine aggregate to prepare the grouting material for steel bar sleeve connection; meanwhile, the dehydration phase prepared from the waste concrete has relatively high early strength, and the hydration reaction speed can be accelerated; the early-strength and high-strength grouting material can be prepared by replacing sulphoaluminate cement and high-alumina cement, a set cement part and an aggregate part in the waste cement concrete are utilized, the cost of the grouting material canbe obviously reduced, and the waste cement concrete can be seen everywhere and is easy to obtain, so that the grouting material for steel bar sleeve connection has remarkable economic and environmental benefits.
本发明提供一种钢筋套筒连接用灌浆料，属于混凝土技术领域。按重量百分比计为，包括：再生细骨料：40～55％，水泥脱水相：5～10％，水泥：25～45％，矿物掺合料：5～10％，减水剂：0.4～1.2％；中后期膨胀剂：5～10％；塑性膨胀剂：0.02～0.05％；消泡剂：0.01～0.05％，早强剂：1～5％。本发明还提供所述灌浆料的制备方法和应用。本发明利用废弃水泥混凝土生成再生细骨料制备钢筋套筒连接用灌浆料，同时利用废弃混凝土制备的脱水相具有较高的早期强度并能加快水化反应速度，能替代硫铝酸盐水泥和高铝水泥来制备早强、高强的灌浆料，不仅利用了废弃水泥混凝土中的水泥石部分，也利用了骨料部分，可明显降低灌浆料的成本，且废弃水泥混凝土随处可见，容易获得，具有显著的经济和环境效益。
Grouting material for steel bar sleeve connection and preparation method and application thereof
The invention provides a grouting material for steel bar sleeve connection, and belongs to the technical field of concrete. The grouting material for steel bar sleeve connection comprises the following components in percentage by weight: 40-55% of a recycled fine aggregate, 5-10% of a cement dehydration phase, 25-45% of cement, 5-10% of a mineral admixture, 0.4-1.2% of a water reducing agent, 5-10% of a middle and later stage expanding agent, 0.02%-0.05% of a plastic expanding agent, 0.01%-0.05% of a defoaming agent and 1%-5% of an early strength agent. The invention further provides a preparation method and application of the grouting material. Waste cement concrete is used for generating the recycled fine aggregate to prepare the grouting material for steel bar sleeve connection; meanwhile, the dehydration phase prepared from the waste concrete has relatively high early strength, and the hydration reaction speed can be accelerated; the early-strength and high-strength grouting material can be prepared by replacing sulphoaluminate cement and high-alumina cement, a set cement part and an aggregate part in the waste cement concrete are utilized, the cost of the grouting material canbe obviously reduced, and the waste cement concrete can be seen everywhere and is easy to obtain, so that the grouting material for steel bar sleeve connection has remarkable economic and environmental benefits.
本发明提供一种钢筋套筒连接用灌浆料，属于混凝土技术领域。按重量百分比计为，包括：再生细骨料：40～55％，水泥脱水相：5～10％，水泥：25～45％，矿物掺合料：5～10％，减水剂：0.4～1.2％；中后期膨胀剂：5～10％；塑性膨胀剂：0.02～0.05％；消泡剂：0.01～0.05％，早强剂：1～5％。本发明还提供所述灌浆料的制备方法和应用。本发明利用废弃水泥混凝土生成再生细骨料制备钢筋套筒连接用灌浆料，同时利用废弃混凝土制备的脱水相具有较高的早期强度并能加快水化反应速度，能替代硫铝酸盐水泥和高铝水泥来制备早强、高强的灌浆料，不仅利用了废弃水泥混凝土中的水泥石部分，也利用了骨料部分，可明显降低灌浆料的成本，且废弃水泥混凝土随处可见，容易获得，具有显著的经济和环境效益。
Grouting material for steel bar sleeve connection and preparation method and application thereof
一种钢筋套筒连接用灌浆料及其制备方法和应用
HU TENG (author) / WANG FUTAO (author) / ZENG CHAO (author) / WANG JUN (author) / CHEN JING (author) / LIU QIBIN (author) / WANG JINWEN (author) / LUO JIE (author) / YANG JIAYU (author) / ZHOU JIQIAN (author)
2020-10-30
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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